Impact of corrosion on axial load capacity of ageing low-strength reinforced concrete columns with different confinement ratios
Impact of corrosion on axial load capacity of ageing low-strength reinforced concrete columns with different confinement ratios
Many ageing structures in earthquake-prone regions are vulnerable to failure by seismic actions resulting from the poor detailing, environmental degradation and quality of materials used. Insufficient column confinement and corrosion of the embedded reinforcement have been identified as some of the problems existing within such structures. This paper summarises the results of an experimental investigation into ageing low-strength short-reinforced concrete (R.C.) columns with varying confinement levels and degrees of corrosion. The latter is introduced in a controlled manner using electrolysis. In total, thirty short R.C. columns (15 square and 15 circular) with three confinement ratios and steel corrosion loss (0% to ∼30%) were subjected to monotonic axial load. The experimental results showed rebar buckling was more pronounced at higher corrosion rates and in sparsely confined columns. In addition, the load-carrying capacity of the R.C. columns was significantly affected by corrosion and the degree of confinement.
Axial load, Confinement, Corrosion, Rebar buckling, Reinforced concrete column
Aminulai, Hammed O.
b2512804-1ab8-41c4-8e6b-f1f0bfb8d7bc
Robinson, Andrew F.
42a3e980-2bd6-4d1c-8a36-000931e90ba2
Ferguson, Neil S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Kashani, Mohammed M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
27 June 2023
Aminulai, Hammed O.
b2512804-1ab8-41c4-8e6b-f1f0bfb8d7bc
Robinson, Andrew F.
42a3e980-2bd6-4d1c-8a36-000931e90ba2
Ferguson, Neil S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Kashani, Mohammed M.
d1074b3a-5853-4eb5-a4ef-7d741b1c025d
Aminulai, Hammed O., Robinson, Andrew F., Ferguson, Neil S. and Kashani, Mohammed M.
(2023)
Impact of corrosion on axial load capacity of ageing low-strength reinforced concrete columns with different confinement ratios.
Construction and Building Materials, 384, [131355].
(doi:10.1016/j.conbuildmat.2023.131355).
Abstract
Many ageing structures in earthquake-prone regions are vulnerable to failure by seismic actions resulting from the poor detailing, environmental degradation and quality of materials used. Insufficient column confinement and corrosion of the embedded reinforcement have been identified as some of the problems existing within such structures. This paper summarises the results of an experimental investigation into ageing low-strength short-reinforced concrete (R.C.) columns with varying confinement levels and degrees of corrosion. The latter is introduced in a controlled manner using electrolysis. In total, thirty short R.C. columns (15 square and 15 circular) with three confinement ratios and steel corrosion loss (0% to ∼30%) were subjected to monotonic axial load. The experimental results showed rebar buckling was more pronounced at higher corrosion rates and in sparsely confined columns. In addition, the load-carrying capacity of the R.C. columns was significantly affected by corrosion and the degree of confinement.
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Accepted/In Press date: 6 April 2023
e-pub ahead of print date: 27 June 2023
Published date: 27 June 2023
Keywords:
Axial load, Confinement, Corrosion, Rebar buckling, Reinforced concrete column
Identifiers
Local EPrints ID: 477078
URI: http://eprints.soton.ac.uk/id/eprint/477078
ISSN: 0950-0618
PURE UUID: 80b3b655-9d7e-406c-9ecf-5b03cc818449
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Date deposited: 25 May 2023 16:47
Last modified: 17 Mar 2024 03:54
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Author:
Hammed O. Aminulai
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